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Concept

Unruh effect

The Unruh effect predicts that an accelerating observer perceives a thermal bath of particles in what a non-accelerating (inertial) observer considers a vacuum. In essence, acceleration creates heat. This phenomenon is a direct consequence of quantum field theory and special relativity. It provides a foundational analogy for understanding Hawking radiation, as an observer near a black hole's event horizon is constantly accelerating to avoid falling in.

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